Question raised in Lok Sabha on National Ambient Air Quality Standards, 28/07/2015. The National Ambient Air Quality Standards (NAAQS) notified by the Government are at Annexure-I. The ambient air quality is monitored at 593 locations in 249 cities, towns and industrial areas across 28 States and 5 Union Territories by CPCB in association with the concerned State Pollution Control Boards and Pollution Control Committees for UTs for SO2, NO2, and PM10 under National Air Monitoring Programme (NAMP).